Slingshots/Catapults?

[CharlesHarris]

When I was a kid I killed lots of small game with a "bean flip". During the SE Asian war games 11 mm ball bearings from the jet engine repair shops were useful to discreetly recon strange noises in the night without discharging your M16, and initiating command detonated mines along the airfield perimeter, or search and traversing machine gun bursts intersecting overlapping fields of fire which prevented your mates from getting their much-needed sleep.

I recall a VC sapper found dead, hanging in the wire with a hole through his forehead. K9 patrol at dawn found him, but the guard had changed by then and nobody recalled any firing overnight... All good.